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AWS E318 vs. AWS E310

Both AWS E318 and AWS E310 are iron alloys. Both are furnished in the as-welded condition. They have 83% of their average alloy composition in common.

For each property being compared, the top bar is AWS E318 and the bottom bar is AWS E310.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
34
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 620
620

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
26
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.4
4.6
Embodied Energy, MJ/kg 62
65
Embodied Water, L/kg 160
200

Common Calculations

PREN (Pitting Resistance) 27
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.0
3.7
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.080
0.080 to 0.2
Chromium (Cr), % 17 to 20
25 to 28
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 57.6 to 69.5
44.5 to 53.9
Manganese (Mn), % 0.5 to 2.5
1.0 to 2.5
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.75
Nickel (Ni), % 11 to 14
20 to 22.5
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030